JP5604318B2 - Duct arrangement structure of work machine - Google Patents

Description

  The present invention relates to a duct arrangement structure for a work machine that is provided in a work machine such as a hydraulic excavator and has a blow-out port that blows air generated by an air conditioner to an operator sitting on an operation seat.

  As a prior art of this type of duct arrangement structure, there is one disclosed in Patent Document 1. This prior art includes an air conditioner arranged in a driver's cab, a duct for guiding the wind generated by the air conditioner, and a blowout port connected to the duct and blowing out air to an operator sitting on the operation seat. Have. The outlet includes an outlet that blows wind toward the rear upper part of the driving seat, an outlet that blows wind toward the front glass, and an outlet that blows the wind toward the face or upper body of the operator sitting on the driving seat. And a blowout port that blows out the wind along the floor of the driving seat or near the feet of the operator sitting on the driving seat.

JP-A-8-175156

  In the above-described prior art, there has been a problem when the cold air generated by the air conditioner is guided by a duct and the cold air is blown out toward an operator sitting on the operation seat. That is, according to the prior art, cold air is not applied to the legs below the knees of the operator sitting on the driving seat, and it is easy for the operator to feel uncomfortable when working in hot heat. Accordingly, there is a concern that the efficiency of work performed by the work device provided in the work machine is reduced.

  The present invention has been made from the above-described prior art, and its purpose is to provide a duct arrangement for a work machine that can realize comfortable air conditioning for an operator sitting on a driving seat during work in hot weather. To provide a structure.

In order to achieve this object, the present invention provides a working machine having a working device, a vehicle body to which the working device is attached, a cab provided on the vehicle body, and a driving seat disposed in the cab. An air conditioner provided in the driver's cab, a duct for guiding the wind generated by the air conditioner, and the duct connected to the duct and guided to the operator sitting on the operation seat by the duct. In the duct arrangement structure of a work machine having a blowout port for blowing out the wind, the blowout port for the upper body blows out the wind guided by the duct toward the upper body of the operator sitting on the operation seat; A knee outlet for blowing the wind guided by the duct toward the lower knee part of the operator sitting on the driving seat; A face outlet that blows out the wind guided by the duct toward the face of the operator sitting on the driving seat, and the upper body outlet and the lower knee outlet are more than the face outlet. so as to be located at a position closer to the driver seat, opening balloon for the upper body, mouth balloon for the knee, and the facial outlet, placed near the right front corner of the cab in the right front of the driver's seat, the The upper body outlet, the lower knee outlet, and the facial outlet are provided so that the upper body outlet and the lower knee outlet are located closer to the driving seat than the facial outlet. A cover is disposed near the right front corner of the cab, and the upper body outlet is provided in the cover. A grill, a second grill disposed below the first grill and provided with the below-knee blowout port, and the wind guided by the duct to the first grill and the second grill. A cylindrical portion inserted into a hole formed in the cover is accommodated, and the first grill, the second grill, and the cylindrical portion are integrally provided .

In the present invention configured as described above, the wind generated by the air conditioner is guided by the duct, and the wind thus guided is blown out from both the upper body outlet and the knee outlet toward the operator sitting on the driving seat. Can be made. Therefore, the operator sitting on the driving seat is given wind to the lower part of the knee as well as the upper body. In this way, the present invention can realize comfortable air conditioning for the operator sitting on the driving seat during work. In addition, the present invention can give the wind guided by the duct to the face of the operator sitting on the driving seat. That is, the wind guided by the duct can be given to the whole body of the operator sitting on the driving seat. In addition, the face outlet, upper body outlet, and lower knee outlet are located near the right front corner of the cab, so the duct that guides the wind generated by the air conditioner is exposed in the right front part of the driver's seat. Therefore, an excellent aesthetic appearance can be secured. In the present invention, the first grill provided with the upper body outlet, the second grill provided with the lower knee outlet, and the cylindrical portion inserted into the hole of the cover are integrally provided. The assembling work when the upper body outlet and the knee outlet are arranged near the right front corner can be performed relatively easily.

The present invention provides a blowout opening for an upper body in which a blowout port that blows out wind generated by an air conditioner and guided by a duct toward an operator sitting on a driving seat blows wind toward the upper body of the operator sitting on the driving seat And a knee outlet for blowing wind toward the knees of the operator sitting on the driving seat and a face outlet for blowing wind toward the face of the operator sitting on the driving seat . Thereby, this invention can give a wind to the whole body including the face of an operator sitting on the driving seat , the upper body, and the lower knee part. That is, in work that will be carried out in the working device provided in the working machine, it is possible to provide a comfortable air conditioning to an operator sitting in the driver seat, the efficiency of work can be improved than before.

It is a side view showing a hydraulic excavator cited as an example of a working machine provided with an embodiment of a duct arrangement structure of the present invention. It is the side view which showed typically the driver's cab with which the hydraulic shovel shown in FIG. 1 is equipped. It is the top view which showed typically the driver's cab with which the hydraulic shovel shown in FIG. 1 is equipped. It is a perspective view which shows the principal part of the duct arrangement | positioning structure which concerns on this embodiment.

  Embodiments of a duct arrangement structure for a work machine according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing a hydraulic excavator cited as an example of a working machine provided with an embodiment of a duct arrangement structure of the present invention.

  As shown in this figure, the excavator includes a traveling body 1 and a revolving body 2 disposed on the traveling body 1. The traveling body 1 and the revolving body 2 constitute a vehicle body of the hydraulic excavator. A work device 3 for excavating earth and sand is attached to the swivel body 2. The working device 3 includes a boom 3a attached to the swing body 2 so as to be rotatable in the vertical direction, an arm 3b attached to the tip of the boom 3a so as to be rotatable in the vertical direction, and a vertical direction on the tip of the arm 3b. And a bucket 3c that is rotatably attached. A driver's cab 4 is disposed at the front position of the revolving structure 2, and a counterweight 5 is disposed at the rear position to ensure a weight balance. An engine room 6 in which an engine, a hydraulic pump, and the like are accommodated is disposed between the cab 4 and the counterweight 5 on the revolving structure 2.

  2 and 3 are views schematically showing a cab provided in the excavator shown in FIG. 1, FIG. 2 is a side view, and FIG. 3 is a plan view.

  An operation seat 11 on which an operator 10 sits is disposed in the cab 4, and consoles 19 and 20 that hold operation levers 17 and 18 for operating the work device 3 are disposed on both sides of the operation seat 11. It is. Further, on the floor in front of the driving seat 11, traveling pedals 21 and 22 for driving the traveling body 1 and footrests 23 and 24 are arranged.

  A rear cover 12 is disposed in the cab 4 located on the rear side of the operation seat 11, and an air conditioner 13 is accommodated in a lower position in the rear cover 12. On the upper surface of the rear cover 12, blowout ports 14, 15, and 16 that blow out air generated by the air conditioner 13, for example, cold air, toward the ceiling of the cab 4 are formed.

  As shown in FIG. 3, the present embodiment includes a duct 28 that is connected to the air conditioner 13 and extends along the right corner of the floor of the cab 4. Further, as shown in FIG. 2, a blowout port is provided that blows out the wind generated by the air conditioner 13 and guided by the duct 28, for example, cold air, to the operator 10 sitting on the operation seat 11.

  As shown by an arrow 26 a in FIG. 2, the air outlet includes a face air outlet 26 that blows out cool air guided by the duct 28 toward the face 10 a of the operator 10 sitting on the driving seat 11. The face outlet 26 is provided so as to be rotatable about a vertical axis, for example. When frost adheres to the front glass of the cab 4 when it is cold or the like, the face outlet 26 is rotated so as to face the front glass of the cab 4 to blow out hot air. Frost adhering to the front glass can be removed. That is, the face outlet 26 also serves as a defroster.

  Further, in this embodiment, as another outlet connected to the duct 28, the cold air guided by the duct 28 toward the upper body 10 b of the operator 10 sitting on the operation seat 11 is indicated by an arrow 31 a in FIG. 2. Blow out the upper body blowout port 31 and the knee 10 that blows the cold air guided by the duct 28 toward the lower knee portion 10c of the operator 10 sitting on the driving seat 11 as shown by the arrow 32a in FIG. 2 and the region 32b in FIG. And an air outlet 32 for use.

  As shown in FIGS. 2 and 3, the face outlet 26, the upper body outlet 31, and the knee outlet 32 are the visibility limits assumed during the operation of the operator 10 sitting on the driving seat 11, that is, the eye The position deviates from the point 33 and is arranged in the vicinity of the right front corner 34 in the cab 4 on the right front side of the operation seat 11.

As shown in FIGS. 2 and 3, in the present embodiment, a face outlet 26, a right front cover 25 provided with a monitor 27 on which various work-related information and the like are displayed, and a right front cover 25 are provided. It is provided with an auxiliary cover 30 that is provided continuously and forms an upper body outlet 31 and a knee outlet 32. As shown in FIG. 3, the right front cover 25 and the auxiliary cover 30 are arranged in the vicinity of the right front corner 34 in the cab 4, and the auxiliary cover 30 is positioned on the side close to the visibility limit, that is, the eye point 33 side. The cover 25 is positioned on the side far from the eye point 33. As shown in FIGS. 3 and 4, the upper body outlet 31 and the lower knee outlet 32 are positioned closer to the driving seat 11 than the face outlet 26. As shown in FIG. 2, for example, the height of the auxiliary cover 30 is set to be lower than the height of the right front cover 25.

  As shown in FIG. 4, the auxiliary cover 30 has a first grill 38 provided with an upper body outlet 31, and a second grille provided below the first grill 38 and provided with a lower knee outlet 32. The cold air guided by the duct 28 described above is guided to the grill 42 and the first grill 38 and the second grill 42 and is inserted into a hole (not shown) formed on the side surface of the right front cover 25 on the eye point 33 side. The cylindrical portion 43 is accommodated. The first grill 38, the second grill 42, and the cylindrical portion 43 are provided integrally.

  As shown in FIG. 4, the first grill 38 is connected to the cylindrical portion 43 and has a first grill case 35 having an upper body outlet 31, and an upper body outlet 31 held by the first grill case 35. The first fins 36 arranged in a vertical direction and rotatable in the vertical and horizontal directions via a link mechanism (not shown), and fixed to predetermined fins of the first fins 36, It has the 1st knob 37 which rotates the some 1st fin 36 to an up-down direction and the left-right direction.

  Similarly, the second grill 42 is also connected to the cylindrical portion 43 and has a second grill case 39 having an under-knee blowing port 32, and is held by the second grill case 39 and disposed in the under-knee blowing port 32. A plurality of second fins 40 arranged in a direction and rotatable in a vertical direction and a horizontal direction via a link mechanism (not shown), and fixed to a predetermined fin among the second fins 40, and a plurality of second fins It has one second knob 41 that rotates 40 in the vertical direction and the horizontal direction.

  As shown in FIG. 4, the second grill case 39 of the second grill 42 is, for example, shorter than the length of the first grill case 35 of the first grill 38 and the width of the first grill case 35. The width is set larger than the dimension. By setting the shapes of the first grill 38 and the second grill 42 in this manner, for example, the amount of air blown from the upper body outlet 31 of the first grill 38 and the lower knee outlet 32 of the second grill 42 are blown out. The air volume is almost the same as the air volume.

  In the present embodiment configured as described above, the wind generated by the air conditioner 13, for example, cool air, is guided by the duct 28, and the cool air blown from the face outlet 26 on the upper surface of the right front cover 25 sits on the driving seat 11. Given to the face 10 a of the operator 10. Moreover, as shown in the arrow 31a of FIG. 2, the cold wind which was guide | induced by the duct 28 as mentioned above, was guide | induced to the 1st grill 38 from the cylindrical part 43 shown in FIG. It is given to the upper body 10b of the operator 10 sitting on the driving seat 11. Further, as described above, the cold air guided by the duct 28, guided from the cylindrical portion 43 shown in FIG. 4 to the second grill 42, and blown out from the blow outlet 32 for the knees is the arrow 32a in FIG. As shown to the area | region 32b, it is given to the lower knee part 10c of the operator 10 who sat on the driving seat 11. FIG.

  Therefore, the cold air generated by the air conditioner 13 is given to the entire body of the upper body 10b including the face 10a and the lower knee portion 10c to the operator 10 sitting on the driving seat 11. That is, this embodiment can realize comfortable air-conditioning for the operator 10 sitting on the operation seat 11 during work in hot weather or the like performed by the working device 3 of the hydraulic excavator. Can improve the efficiency.

  In the present embodiment, the right front cover 25 provided with the face outlet 26 and the auxiliary cover 30 provided with the upper body outlet 31 and the knee outlet 32 are provided on the right front corner 34 in the cab 4. The visual field limit assumed when the operator 10 is working, that is, a position deviated from the eye point 30 is arranged. With this configuration, during the work performed by the working device 3 of the excavator, the face outlet 26, the upper body outlet 31 and the knee outlet 32 are within the field of view of the operator 10 sitting on the driving seat 11. Smooth operation can be performed without entering. This contributes to improvement of work efficiency.

  In the present embodiment, the right front cover 25 provided with the face outlet 26 and the auxiliary cover 30 provided with the upper body outlet 31 and the knee outlet 32 are connected to the right front corner 34 in the cab 4. Therefore, the duct that guides the cold air generated by the air conditioner 13 is not exposed to the right front portion of the operation seat 11, and an excellent aesthetic appearance can be ensured.

  In the present embodiment, the first cover 38 provided with the upper body outlet 31, the second grill 42 provided with the knee outlet 32, the first and second grills 38, 42 and a cylindrical portion 43 connected to the duct 28 are integrally provided. As a result, the assembling work when the upper body outlet 31 and the knee outlet 32 are arranged in the right front corner 34 of the cab 4 can be performed relatively easily.

  In the present embodiment, the operator 10 sitting on the driving seat 11 grasps the first knob 37 of the first grill 38 and moves the plurality of first fins 36 in the vertical direction or the horizontal direction. The direction of the cool air blown out as desired by the operator 10 sitting on the driving seat 11 is adjusted by gripping the second knob 41 of the two grilles 42 and moving the plurality of second fins 40 in the vertical direction or the horizontal direction. can do.

  Further, in the present embodiment, since the height dimension of the auxiliary cover 30 is set lower than that of the right front cover 25, it is possible to more reliably prevent adverse effects on the field of view of the operator 10 sitting on the driving seat 11.

  In the above embodiment, the length dimension of the second grill case 39 of the second grill 42 accommodated in the auxiliary cover 30 is set shorter than the length dimension of the first grill case 35 of the first grill 38. However, when it is desired to increase the amount of air blown from the below-knee outlet 32, the length of the second grill case 39 may be set to be as long as, for example, the length of the first grill case 35. In the above embodiment, the width dimension of the first grill case 35 of the first grill 38 is set to be smaller than the width dimension of the second grill case 39 of the second grill 42. When the air volume to be increased is increased, the width dimension of the first grill case 35 may be set to be as large as, for example, the width dimension of the second grill case 39.

  In the above embodiment, in consideration of work in hot weather or the like, cold air is generated by the air conditioner 13, and cold air is blown out from the face outlet 26, the upper body outlet 31, and the knee outlet 32. However, when work is performed in a cold district, warm air is generated by the air conditioner 13, and the warm air is generated from the face outlet 26, the upper body outlet 31, and the knee lower outlet 32. Of course, you can make it blow out.

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Revolving body 3 Working device 4 Operator's room 10 Operator 10a Face 10b Upper body 10c Lower knee part 11 Driving seat 13 Air conditioner 25 Right front cover 26 Facial outlet 28 Duct 30 Auxiliary cover 31 Upper body outlet 32 Knee outlet 33 Eyepoint (limit of visibility)
34 right front corner 35 first grill case 36 first fin 37 first knob 38 first grill 39 second grill case 40 second fin 41 second knob 42 second grill 43 cylindrical part

Claims (1)

Provided in a work machine having a working device, a vehicle body to which the working device is attached, a cab provided on the vehicle body, and a driving seat disposed in the cab.
The air conditioner arranged in the driver's cab, a duct for guiding the wind generated by the air conditioner, and the wind guided by the duct is blown out to an operator who is connected to the duct and sits on the operating seat. In the duct arrangement structure of a work machine having a blowout port,
The blowout port is directed toward the upper body of the operator sitting on the driving seat, blowing out the wind guided by the duct, and toward the lower knee portion of the operator sitting on the driving seat, A knee outlet for blowing out the wind guided by the duct, and a face outlet for blowing out the wind guided by the duct toward the face of the operator sitting on the driving seat;
The upper body outlet, the lower knee outlet, and the facial outlet are arranged so that the upper body outlet and the lower knee outlet are located closer to the driving seat than the facial outlet. , Located near the right front corner of the driver's cabin right in front of the driving seat,
The upper body outlet, the lower knee outlet, and the facial outlet are provided so that the upper body outlet and the lower knee outlet are located closer to the driving seat than the facial outlet. The cover is disposed near the right front corner of the cab,
A first grill provided with the upper body outlet in the cover, a second grill disposed below the first grill and provided with the knee outlet, the first grill and the second grill While guiding the wind guided by the duct to the grill, and storing the cylindrical portion inserted in the hole formed in the cover,
A duct arrangement structure for a working machine, wherein the first grill, the second grill, and the cylindrical portion are provided integrally .

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